ktvu's meteorologist mark tamayo joins us next on when you can expect some rain. n >>> a south bay charity says it will open its cold weather shelter program tomorrow. ehc line fielders runs three shelters at the national guard armories. the program provides 275 emergency beds some of them allocated for veterans and people previously living in homeless encampment. it's annual program serves almost 3,000 people each year. >>> and the timing of this really is good because our weather is changing. let's check in now with our meteorologist mark tamayo. and mark those temperatures have already dropped significantly. >> already we're talking about 40s. here's a look at some of the current numbers out there. san jose checking in 49 degrees. reports of fog already out toward santa rosa. the oakland airport, san jose and also out toward the fairfield area as well. in addition to the cold temperatures overnight we're tracking a major weather change with more storms developing out here in the pacific. first one you can pick out, there's the first circulation. this will be a